// Fig. 12.15: MultipleSelection.java
// Copying items from one List to another.

// Java core packages
import java.awt.*;
import java.awt.event.*;

// Java extension packages
import javax.swing.*;

public class MultipleSelection extends JFrame {
   private JList colorList, copyList;
   private JButton copyButton;

   private String colorNames[] = { "Black", "Blue", "Cyan", 
      "Dark Gray", "Gray", "Green", "Light Gray", 
      "Magenta", "Orange", "Pink", "Red", "White", "Yellow" };

   // set up GUI
   public MultipleSelection()
   {
      super( "Multiple Selection Lists" );

      // get content pane and set its layout
      Container container = getContentPane();
      container.setLayout( new FlowLayout() );

      // set up JList colorList
      colorList = new JList( colorNames );
      colorList.setVisibleRowCount( 5 );
      colorList.setFixedCellHeight( 15 );
      colorList.setSelectionMode(
         ListSelectionModel.MULTIPLE_INTERVAL_SELECTION );
      container.add( new JScrollPane( colorList ) );

      // create copy button and register its listener
      copyButton = new JButton( "Copy >>>" );

      copyButton.addActionListener(

         // anonymous inner class for button event
         new ActionListener() {

            // handle button event
            public void actionPerformed( ActionEvent event )
            {
               // place selected values in copyList
               copyList.setListData(
                  colorList.getSelectedValues() );
            }

         }  // end anonymous inner class

      ); // end call to addActionListener

      container.add( copyButton );

      // set up JList copyList
      copyList = new JList( );
      copyList.setVisibleRowCount( 5 );
      copyList.setFixedCellWidth( 100 );
      copyList.setFixedCellHeight( 15 );
      copyList.setSelectionMode(
         ListSelectionModel.SINGLE_INTERVAL_SELECTION );
      container.add( new JScrollPane( copyList ) );

      setSize( 300, 120 );
      setVisible( true );
   }

   // execute application
   public static void main( String args[] )
   { 
      MultipleSelection application = new MultipleSelection();

      application.setDefaultCloseOperation(
         JFrame.EXIT_ON_CLOSE );
   }

}  // end class MultipleSelection


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 * (C) Copyright 2002 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
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